海底的

China is the fifth-largest investor in international efforts for seabed development, and has obtained an exclusive exploration and development area of 75,000 sq km.

中国是国际海底区域开发第五大投资国，并在国际海底区域获得了7.5万平方公里的专属勘探开发区。

Planktonic foraminifera assemblages of 79 core top samples from the western and southern areas of the Indonesian Archipelago were grouped using cluster analysis. The results indicate that foraminifer assemblages make it possible to sub-divide the studied area in five provinces. The modern ocean characters and the surface sediment features from the five provinces are studied in the project.

本项目依据印度尼西亚多岛海及邻区七十九个海底表层样品的浮游有孔虫组合聚类分析结果，将该区划分为五个洋流活动区，对各区现代海洋学性质与海底表层沉积物特点进行对比研究。

Changes of erosion and accumulation of the seabed before and after the project The general characteristics of the pattern of erosion and accumulation of the seabed near the scheduled project both before and after the scheduled project are as the following: accumulation occurs at the areas lower than–10 isobath; some suspended sediment is deposited near the coast due to the relatively small tidal current with a monthly accumulation rate of 2-6 mm; while a slight erosion occurs in the areas deeper than–10 isobath with a monthly accumulation rate of .2 mm.

5工程前后海底冲淤变化工程前后海底冲淤相同的地方是：大致沿-10m等深线向近岸呈淤积状态，近岸由于潮流流速小，一些悬沙落淤，月淤积量在近岸附近约2-6mm；而-10m等深线以深基本上呈轻微冲刷状态，月冲刷量一般在0.2mm以下。

Kiaochow Bay subsea tunnel is the second self-building tunnel in China with the designed service life over 100 years.

胶州湾海底隧道是中国自行建造的第二条海底隧道，其服役寿命为100a。

At present 2 subsea tunnels are under construction in China and the other subsea tunnels in China are still in research stage.

海底隧道工程在国内还是刚刚起步，正在施工的海底隧道有两条隧道，其他还处于研究之中。

In bathymetric survey, the recorded seabed is distorted due to the beam-width of the echo sounder.

在海底地形测量中，由于波束角效应导致探测的海底地形存在失真。

The ore-bearing fluid of the Dabaoshan deposit is related to magmatic thermal dynamic process, and volcanogene hydrothermal sedimentary polymetallic deposit on seabed was formed. The Fankou Ore-bearing fluid is related to circulation hydrothermal in deep formation, and middle-lower temperature Pb-Zn-Ag-Hg polymetallic sedimentary deposit by sea-floor thermal spring and overflowing was formed. The Hongyan ore-bearing fluid is related to the compaction water that formed by the basin's lithogeny process, and low temperature and pyrite only was formed.

大宝山型流体与岩浆热动力作用有关，形成海底火山热液沉积多金属矿床；凡口型流体与深部建造的循环热液有关，形成中低温海底热泉喷溢沉积铅锌银汞矿床；红岩型流体与盆地成岩压实水有关，形成低温单一黄铁矿矿床。

This paper discusses the classification of seabed sediment using normally incident, high frequency sound pules.

本文提出一种垂直入射声脉冲遥测海底表层沉积物类型的方法。一些作者已经指出，海底反射系数可以作为特征量用于识别沉积物类型。

Oil slicks are left on the ocean's surface during this process.

在这个过程中石油被留在海洋表面，石油逐步蒸发，留下一层沥青又沉到海底，形成了海底沉淀物的一部分。

We use different coefficients such as bottom friction, bottom roughness and horizontal turbulent friction for the numerical test.

选用不同的海底摩擦系数、海底粗糙度系数以及水平湍流摩擦系数进行数值试验。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。